prepasti

1. to frighten; to scare
   Prepao si me, nisam te čula! — You scared me, I didn't hear you!
   Pas je prepao dete. — The dog frightened the child.
2. (prepasti se) to get scared; to be frightened
   Prepao sam se kad je nestalo struje. — I got scared when the power went out.
   Ona se prepala psa. — She was frightened by the dog.

Prepasti se takes the genitive or od + genitive: prepao se psa / od psa.